The Swampfox Patriot 4-16x44mm Riflescope a battery free scope that has an optimized internal design that maximizes the eye box, a clear sight picture from edge to edge, even when it is at the highest magnification. Use the included low or high profile throw fins to make quick magnification changes. The zero-re-settable target turrets feature crisp, tactile and audible clicks calculated to match the Sharpshooter MOA or Sharpshooter MRAD first focal plane (FFP) reticle with either 0.25 MOA or 0.1 MRAD adjustment per click. The Swampfox Patriot 4-16x44mm Riflescope delivers worry-free use in hunting, tactical, or competition shooting situations.